rsSampler.h revision c700e649ca44d0dcff8b271e42d949ea72fe3c63 
1/*
2 * Copyright (C) 2009 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17#ifndef ANDROID_RS_SAMPLER_H
18#define ANDROID_RS_SAMPLER_H
19
20#include "rsAllocation.h"
21#include "RenderScript.h"
22
23// ---------------------------------------------------------------------------
24namespace android {
25namespace renderscript {
26
27const static uint32_t RS_MAX_SAMPLER_SLOT = 16;
28
29class SamplerState;
30
31class Sampler : public ObjectBase {
32public:
33    static ObjectBaseRef<Sampler> getSampler(Context *,
34                                             RsSamplerValue magFilter,
35                                             RsSamplerValue minFilter,
36                                             RsSamplerValue wrapS,
37                                             RsSamplerValue wrapT,
38                                             RsSamplerValue wrapR,
39                                             float aniso = 1.0f);
40    void bindToContext(SamplerState *, uint32_t slot);
41    void unbindFromContext(SamplerState *);
42
43    virtual void serialize(OStream *stream) const;
44    virtual RsA3DClassID getClassId() const { return RS_A3D_CLASS_ID_SAMPLER; }
45    static Sampler *createFromStream(Context *rsc, IStream *stream);
46
47    struct Hal {
48        mutable void *drv;
49
50        struct State {
51            RsSamplerValue magFilter;
52            RsSamplerValue minFilter;
53            RsSamplerValue wrapS;
54            RsSamplerValue wrapT;
55            RsSamplerValue wrapR;
56            float aniso;
57        };
58        State state;
59    };
60    Hal mHal;
61
62protected:
63    int32_t mBoundSlot;
64
65    virtual void preDestroy() const;
66    virtual ~Sampler();
67
68private:
69    Sampler(Context *);
70    Sampler(Context *,
71            RsSamplerValue magFilter,
72            RsSamplerValue minFilter,
73            RsSamplerValue wrapS,
74            RsSamplerValue wrapT,
75            RsSamplerValue wrapR,
76            float aniso = 1.0f);
77};
78
79
80class SamplerState {
81public:
82    ObjectBaseRef<Sampler> mSamplers[RS_MAX_SAMPLER_SLOT];
83    void init(Context *rsc) {
84    }
85    void deinit(Context *rsc) {
86        for (uint32_t i = 0; i < RS_MAX_SAMPLER_SLOT; i ++) {
87            mSamplers[i].clear();
88        }
89    }
90    // Cache of all existing raster programs.
91    Vector<Sampler *> mAllSamplers;
92};
93
94}
95}
96#endif //ANDROID_RS_SAMPLER_H
97
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100